1 files changed, 12 insertions, 11 deletions
diff --git a/activerecord/lib/active_record/type/date_time.rb b/activerecord/lib/active_record/type/date_time.rb
index 5f19608a33..a5199959b9 100644
--- a/activerecord/lib/active_record/type/date_time.rb
+++ b/activerecord/lib/active_record/type/date_time.rb
@@ -1,22 +1,15 @@
 module ActiveRecord
   module Type
     class DateTime < Value # :nodoc:
-      include TimeValue
+      include Helpers::TimeValue
+      include Helpers::AcceptsMultiparameterTime.new(
+        defaults: { 4 => 0, 5 => 0 }
+      )
 
       def type
         :datetime
       end
 
-      def type_cast_for_database(value)
-        zone_conversion_method = ActiveRecord::Base.default_timezone == :utc ? :getutc : :getlocal
-
-        if value.acts_like?(:time)
-          value.send(zone_conversion_method)
-        else
-          super
-        end
-      end
-
       private
 
       def cast_value(string)
@@ -38,6 +31,14 @@ module ActiveRecord
 
         new_time(*time_hash.values_at(:year, :mon, :mday, :hour, :min, :sec, :sec_fraction, :offset))
       end
+
+      def value_from_multiparameter_assignment(values_hash)
+        missing_parameter = (1..3).detect { |key| !values_hash.key?(key) }
+        if missing_parameter
+          raise ArgumentError, missing_parameter
+        end
+        super
+      end
     end
   end
 end